A5059550095- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Thin-Film Transistor Technologies
- Chalcogenide Semiconductor Thin Films
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Molecular Junctions and Nanostructures
- Solid-state spectroscopy and crystallography
- Fullerene Chemistry and Applications
- Nanowire Synthesis and Applications
- Semiconductor materials and interfaces
- Luminescence and Fluorescent Materials
- Advanced Memory and Neural Computing
- Electronic and Structural Properties of Oxides
- Material Dynamics and Properties
- Advanced Photocatalysis Techniques
- solar cell performance optimization
- Photonic Crystals and Applications
- Advanced Sensor and Energy Harvesting Materials
- Metamaterials and Metasurfaces Applications
- 2D Materials and Applications
- Advanced battery technologies research
Chinese University of Hong Kong
2016-2025
Guizhou Normal University
2025
Southwest University of Science and Technology
2025
Hunan University
2024
Guangxi Medical University
2023
The Synergetic Innovation Center for Advanced Materials
2023
Nanjing University of Posts and Telecommunications
2023
City University of Hong Kong
2022
Wuhan University
2021-2022
Zhejiang University
2022
A planar fused-ring electron acceptor (IC-C6IDT-IC) based on indacenodithiophene is designed and synthesized. IC-C6IDT-IC shows strong absorption in 500–800 nm with extinction coefficient of up to 2.4 × 105 M–1 cm–1 high mobility 1.1 10–3 cm2 V–1 s–1. The as-cast polymer solar cells without additional treatments exhibit power conversion efficiencies 8.71%.
We design and synthesize four fused-ring electron acceptors based on 6,6,12,12-tetrakis(4-hexylphenyl)-indacenobis(dithieno[3,2-b;2′,3′-d]thiophene) as the electron-rich unit 1,1-dicyanomethylene-3-indanones with 0–2 fluorine substituents electron-deficient units. These molecules exhibit broad (550–850 nm) strong absorption high extinction coefficients of (2.1–2.5) × 105 M–1 cm–1. Fluorine substitution downshifts LUMO energy level, red-shifts spectrum, enhances mobility. The polymer solar...
An alloy-like model based on Y6 and its derivative BTP-M is constructed to fabricate ternary organic solar cells, leading a best efficiency of 17.03%.
Passivating surface and bulk defects of perovskite films has been proven to be an effective way minimize nonradiative recombination losses in solar cells (PVSCs). The lattice interference perturbation atomic periodicity at the surfaces often significantly affect material properties device efficiencies. By tailoring terminal groups on modifying chemical environment, can reduced enhance photovoltaic performance stability derived PVSCs. Here, we report a rationally designed bifunctional...
Abstract Obtaining a finely tuned morphology of the active layer to facilitate both charge generation and extraction has long been goal in field organic photovoltaics (OPVs). Here, solution resolve above challenge via synergistically combining layer‐by‐layer (LbL) procedure ternary strategy is proposed demonstrated. By adding an asymmetric electron acceptor, BTP‐S2, with lower miscibility binary donor:acceptor host PM6:BO‐4Cl, vertical phase distribution can be formed donor‐enrichment at...
Non-fullerene acceptors based organic solar cells represent the frontier of field, owing to both materials and morphology manipulation innovations. Non-radiative recombination loss suppression performance boosting are in center cell research. Here, we developed a non-monotonic intermediate state strategy for state-of-the-art by employing 1,3,5-trichlorobenzene as crystallization regulator, which optimizes film process, regulates self-organization bulk-heterojunction manner, i.e., first...
The flexibility in structural design of organic semiconductors endows solar cells (OSCs) not only great function-tunabilities, but also high potential toward practical application. In this work, simple non-fused-ring electron acceptors are developed through two-step synthesis from single aromatic units for constructing efficient OSCs. With the assistance non-covalent interactions, these rotatable non-fused (in solution) allow transiting into planar and stackable conformation condensed solid,...
A fused hexacyclic electron acceptor, IHIC, based on strong electron‐donating group dithienocyclopentathieno[3,2‐ b ]thiophene flanked by electron‐withdrawing 1,1‐dicyanomethylene‐3‐indanone, is designed, synthesized, and applied in semitransparent organic solar cells (ST‐OSCs). IHIC exhibits near‐infrared absorption with extinction coefficients of up to 1.6 × 10 5 m −1 cm , a narrow optical bandgap 1.38 eV, high mobility 2.4 −3 2 V s . The ST‐OSCs blends narrow‐bandgap polymer donor PTB7‐Th...
We design and synthesize two isomeric fused-ring electron acceptors, FNIC1 FNIC2, which have the same end-groups side-chains, but fused-nine-ring cores. Subtle changes in isomers influence their electronic, optical, charge-transport, morphological properties. As compared with FNIC1, FNIC2 film exhibits a red-shifted absorption peak at 794 nm (752 for FNIC1), larger affinity of 4.00 eV (3.92 smaller ionization energy 5.56 (5.61 higher mobility 1.7 × 10–3 cm2 V–1 s–1 (1.2 FNIC1). The as-cast...
Typical organic photovoltaic materials show high Urbach energies (ca. 25–50 meV), which is considerably higher than those of their inorganic counterparts and limits further improvement in the device efficiency solar cells (OSCs). In this study, we introduce a facile method selenium substitution to reduce energy 20.4 meV (Y6Se), lowest value reported for high-performance very close 15 meV) typical inorganic/hybrid semiconductors, such as crystalline silicon, gallium nitride, lead-halide...
Abstract Increasing the power conversion efficiency (PCE) of two‐dimensional (2D) perovskite‐based solar cells (PVSCs) is really a challenge. Vertical orientation 2D perovskite film an efficient strategy to elevate PCE. In this work, vertically orientated highly crystalline (PEA) 2 (MA) n–1 Pb n I 3n+1 (PEA= phenylethylammonium, MA = methylammonium, 3, 4, 5) films are fabricated with assistance ammonium thiocyanate (NH 4 SCN) additive by one‐step spin‐coating method. Planar‐structured PVSCs...
Both fluorine and ester substituted monothiophene yielded a novel thiophene derivative FE-T. The resulting polymer donor S1 enabled single-junction non-fullerene solar cell with over 16% efficiency.
A PCE of 5.16% with a <italic>V</italic><sub>oc</sub> 1.14 V is achieved thermally stable P3HT : SF(DPPB)<sub>4</sub> solar cells.
Recent advances in the development of polymerized A-D-A-type small-molecule acceptors (SMAs) have promoted power conversion efficiency (PCE) all-polymer solar cells (all-PSCs) over 13%. However, monomer an SMA typically consists a mixture three isomers due to regio-isomeric brominated end groups (IC-Br(in) and IC-Br(out)). In this work, two isomeric are successfully separated, regioisomeric issue is solved, polymer acceptors, named PY-IT, PY-OT, PY-IOT, developed, where PY-IOT random...
Narrow bandgap n-type organic semiconductors (n-OS) have attracted great attention in recent years as acceptors solar cells (OSCs), due to their easily tuned absorption and electronic energy levels comparison with fullerene acceptors. Herein, a new n-OS acceptor, Y5, an electron-deficient-core-based fused structure is designed synthesized, which exhibits strong the 600-900 nm region extinction coefficient of 1.24 × 105 cm-1 , electron mobility 2.11 10-4 cm2 V-1 s-1 . By blending Y5 three...
In order to utilize the near-infrared (NIR) solar photons like silicon-based cells, extensive research efforts have been devoted development of organic donor and acceptor materials with strong NIR absorption. However, single-junction cells (OSCs) photoresponse extending into >1000 nm power conversion efficiency (PCE) >11% rarely reported. Herein, three fused-ring electron acceptors varying core size are These molecules exhibit absorption from 600 1000 high mobility (>1 × 10-3 cm2 V-1 s-1 )....
Low energy loss and efficient charge separation under small driving forces are the prerequisites for realizing high power conversion efficiency (PCE) in organic photovoltaics (OPVs). Here, a new molecular design of nonfullerene acceptors (NFAs) is proposed to address above two issues simultaneously by introducing asymmetric terminals. Two NFAs, BTP-S1 BTP-S2, constructed halogenated indandione (A1 ) 3-dicyanomethylene-1-indanone (A2 as different conjugated terminals on central fused core...
Abstract Solution-processed metal halide perovskites have been recognized as one of the most promising semiconductors, with applications in light-emitting diodes (LEDs), solar cells and lasers. Various additives widely used perovskite precursor solutions, aiming to improve formed film quality through passivating defects controlling crystallinity. The additive’s role defect passivation has intensively investigated, while a deep understanding how influence crystallization process is lacking....
Ternary solar cells with an efficiency of 16.7% were enabled through the use PCBM as a higher LUMO-level acceptor additive to concurrently increase <italic>V</italic><sub>oc</sub>, <italic>J</italic><sub>sc</sub> and FF values.